Driving mechanism for magnetos.



A. MAIRE.

DRIVING MECHANISM FOR MAGNETOS.

APPLICATION FILED MAR. 24. 1917.

LMLIM, Patented Sept. 25, 1917.

UNTTED STATES PATENT @FETQE.

AUGUSTE MAIRE, 0F ARGENTEUIL, FRANCE, ASSIGNOR T0 SOGIETE LORRAINE DESANCIENS ETABLISSEMENTS DE DIETRICH & CIE. DE LUNEVILLE, OF PARIS,

FRANCE.

DRIVING MECHANISM FOR MAGNETOS.

1,2d1 ,13at.

Application filed March 24, 1917.

To all whom it may concern.-

Be it known that I, AUGUs'rn MAilm, citizen of the Republic of France,residing at Route de Bezons, Argenteuil, Seine and ()ise, in theRepublic of France, have invented new and useful Improvements in DrivingMechanisms for Magnetos, of which the following is a specification.

This invention has for its object to provide an improved drivingmechanism for the ignition magnetos of internal combustion engines. Theimproved mechanism consists substantially of a hub fixed on the shaft ofthe magneto upon which the pinion for driving the said magneto ismounted in such a manner that it can slide thereon without rotatingrelatively thereto, the'arrangement being such that the axial thrust ofthis pinion due to the actual transmission of motion or resulting fromthe shocks and vibrations which this pinion receives, may be transmittedin this manner to the forward side plate of the magneto and be taken upby the said side plate instead of being transmitted to the shaft of themagneto, and consequently to the comparatively delicate internal partsof the magneto.

The accompanying drawings illustrate by way of example one form ofconstruction of the improved mechanism for driving a magneto, accordingto this invention.

In these drawings Figure 1 is a longitudinal section of the improvedmechanism, and

Fig. 2 is a section taken through the hub along which the driving pinionis adapted to slide.

As shown in the drawings, there is mounted on the conical end A of themagneto shaft, a hub B comprising feather-keys G formed on it. Alongthis hub there is adapted to slide a driving bevel pinion or a drivingspur pinion C which is formed with as many grooves as there arefeather-keys on the hub.

The axial thrust of the driving pinion C due to the actual transmissionof the motion or to the shocks and vibrations which this pinionreceives, can by this arrangement be transmitted to the forward sideplate of the magneto and be taken up by the said Specification ofLetters Patent.

Patented Sept. 25, 1917.

Serial No. 157,235.

side plate. In practice, a ball bearing D whose counter-plate I iscentered on the side plate of the magneto, is arranged between the sideplate and the rear end of the sleeve that carries the driving pinion C.

The centering ring E may be constituted by the side plate of themagneto, or it may be an affixed part whose contour is determined by theshape of the said side plate.

In addition, a screw-thread F is shown which has for its object to avoidany oil being drawn into tlie interior of the magneto, and which allowsof returning this oil on its way to the casing.

It is to be understood that the herein described mechanism may beemployed with any type of magneto and irrespective of the speed of themagneto, relatively to the engine.

Having now described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In driving mechanism for ignition magnetos, the combination with aside plate of the magneto, of the magneto shaft having a portionprojecting beyond the side plate, a hub fixed to the projecting portionof the shaft, and a sleeve slidable longitudinally upon but notrotatable about said hub, one end of said sleeve being adapted to exertits thrust against the side plate and the other end of said sleevecarrying a driving pinion.

2. In driving mechanism for ignition magnetos, the combination with aside plate of the magneto, of the magneto shaft having a portionprojecting beyond the said side plate, a hub fixed to the projectingportion of the shaft, a sleeve slidable longitudinally upon but notrotatable about said hub, said sleeve having a pinion at one end thereofand a flange at the other end substantially parallel to the said sideplate, and ball bearings interposed between said flange and side plate.

3. A driving mechanism for ignition magnetos comprising in combination:the shaft of the magneto, a hub fixed on this shaft and provided withfeather-keys formed on its periphery, a sleeve mounted upon this hub andprovided with grooves corresponding with the feather-keys of the Tntestimony whereof I have signed my huh, a. driving pinlon fixed to thisSiOOVO, name to H115 specification II] the presence of the folwvnrd SHiOdate of the'mu neto and two suhserihlm witnesses.

:l' ball hearing interposed between the rear AUGUSTE MAIRE. end of thesaid sleeve and the said forward wltnesses: slde plate of the magneto,substantially as Louis MOSES,

described and for the purpose set forth. Cum v I. PRESSLY.

